Hi there
I have a site with the following setup:
1. 5kW Multiplus II
2. 1 x SmartSolar MPPT 250/60 with 8 x 375W PV panels
3. 1 x SmartSolar MPPT 250/60 with 8 x 380W PV panels
4. 2 x FreedomWon 10/8 LiFe batteries
5. Color Control GX
The system will start off in the morning charging at 100% (using all the available solar power). Then when the battery reaches 90% the one SmartSolar MPPT will almost switch off. The one MPPT will charge at +-1800W which is the size of the load and the other MPPT will charge at +-10W. This means the battery does not charge to 100%.
If I change the settings so that the system exports power, both MPPTs provide all the available power which was +-4400W at that stage.
Any ideas why this would happen? I replaced one of the MPPTs recently and did Firmware upgrades on the whole system and now I noticed this.
Kind regards
Chris